| Are there any real options in this space for something that is - E2EE - Large group capable (100+ users) - FOSS + self hostable - Not riddled with security issues - Relatively easy to use for iOS and Android users (safe for normies) I help run a Matrix server for people who are at risk from the current administration and I can attest to all of the issues mentioned plus a few more. I'd rather not move to something as hostile as Discord and while we've tried Stoat it's infinitely more buggy and the lack of iOS apps is causing problems. Rocket chat is interesting but E2EE is early in development, lots of security issues at last check. Simplex isn't going to be better for large group stuff, it has the same fundamental sync issues Matrix does and the devs are more interested in crypto than fixing that. |
For all the (sometimes rightful) grief Matrix gets, it's essentially the only solution targeting hard problems like multi-device encrypted group chats[0] or truly federated multi-user chats. It can also be a very quickly moving ecosystem, which is difficult to handle when you're an open federated spec. Hence why several of the complaints in this post are caused by old and no longer supported clients and servers.
[0] Infamously, WhatsApp and LINE both support encrypted chats but all the encryption keys are stored on your phone, so you can only have one phone working at a time and desktop access is actually routed through it.